Tecnologic TLB30S YYYBV split thermostat with large red display

Models TLB 30 and TLB 55 (display and control unit) and TLBSL (power supply and output module) are digital devices controlled by a microprocessor. They are suitable for cooling with ON/OFF temperature control and defrosting with heating rods or hot steam (reversing).
The TLB30 and TLB50 control units are functionally identical, differing only in mechanical dimensions.
The unit has 3 relay outputs, 2 inputs for PTC or NTC temperature sensors and 2 configurable digital inputs. The outputs (TLBSL module) are used for compressor control or temperature control devices, for defrost and evaporator fan control. They can also be used as an alarm or auxiliary output.
The two inputs of PTC or NTC temperature sensors (which can be parameterized) connected to the TLB30 or TLB55 unit are used to measure room temperature (Pr1) and evaporator temperature (Pr2). The digital inputs (DIG1, 2) can be programmed for various functions - defrost start, selection of two or four control setpoints, external alarm signaling, continuous cycle activation and auxiliary relay activation. In addition, the unit is equipped with alarm and shutdown control outputs in case of too high or low supply voltage. The instrument has a large two-digit display (TLB30 - height 31mm, TLB55 - height 54mm ) with three LED status indicators. Parameter programming is possible via the touch screen or via a remote keypad(TLBTA-not included) connected to the TLB30 (TLB55) unit. The connection of the TLBSL module to the unit is via a cable (TLBCA) with RJ connectors.